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Edit PDF / Stable

Add a Watermark to a PDF Online

Draw a configurable text watermark on selected PDF pages and save a new copy.

Quick answer

What does Watermark PDF do?

Draw a configurable text watermark on selected PDF pages and save a new copy. The selected PDF is processed locally in this browser without being sent to a backend conversion server. A visible watermark is not a cryptographic protection and can sometimes be edited or covered.

Use Watermark PDF when you need to add a visible text watermark to selected PDF pages. Common uses include mark a document Draft, add a visible Confidential label, place an organization name on review copies.

Input: PDF
Processing: In this browser
File upload: No
Price: Free

Designed around the task

Why use Watermark PDF?

Focused controls, local processing, and clear limits help you finish the job without sending the document to a conversion server.

Focused results

Adds new visible text content over selected PDF pages.

Useful browser controls

Leaves the source PDF unchanged and does not encrypt the output.

Desktop and mobile

Use Watermark PDF in a current desktop or mobile browser without installing a separate app.

Simple local workflow

Create an output you can inspect before sharing.

Private by design

The selected PDF is processed by JavaScript running in this browser for Watermark PDF. NoLogPDF does not send it to a backend conversion API, and file names, contents, form values, passwords, and output data are excluded from site analytics.

Automatic file recognition

NoLogPDF checks the selected file in your browser and shows the controls available for Watermark PDF.

How to use Watermark PDF

Choose a PDF file.
Enter watermark text and the pages to mark.
Adjust position, size, color, rotation, and opacity.
Apply the watermark and download the PDF.

What Watermark PDF changes

Adds new visible text content over selected PDF pages.
Leaves the source PDF unchanged and does not encrypt the output.

Browser-only privacy

Limits to know before using Watermark PDF

A visible watermark is not a cryptographic protection and can sometimes be edited or covered.
Existing page content and unusual rotations can affect placement.

Common uses for Watermark PDF

Mark a document Draft.
Add a visible Confidential label.
Place an organization name on review copies.

Next step: Continue this workflow with Edit PDF.

Watermark PDF questions

How does Watermark PDF work?

Draw a configurable text watermark on selected PDF pages and save a new copy. Choose a PDF file. Enter watermark text and the pages to mark. Adjust position, size, color, rotation, and opacity.

Does Watermark PDF upload my PDF?

No. The selected PDF is read by code running in this browser for this operation. NoLogPDF does not send it to a backend conversion API or include document data in analytics.

What does Watermark PDF change in the output?

Adds new visible text content over selected PDF pages. Leaves the source PDF unchanged and does not encrypt the output.

What limits should I know before using Watermark PDF?

A visible watermark is not a cryptographic protection and can sometimes be edited or covered. Existing page content and unusual rotations can affect placement.

Published and maintained by NoLogPDF

How this tool page is checked

The instructions describe this browser implementation, its expected output, and its known limits. Core workflows are exercised with local fixtures, output files are validated where the format allows, and mobile behavior is checked at a narrow viewport.